refactor: Clarify breaking change notice

src/extract.js

@@ -9,9 +9,11 @@ async function run() {
 
     if (!core.getInput('destination')) {
       core.notice([
-        'As you did not specify a destination, the default is being used.',
-        'As of version shrink/[email protected], the default does not include a dot prefix.',
+        'As you did not specify a docker extract destination, the default is being used.',
+        'As of shrink/[email protected] the default does not include a dot prefix.',
+        `v3.0.0: "${destination}", v3.0.1: ".${destination}"`,
         'See https://github.com/shrink/actions-docker-extract/issues/28 for context.',
+        'No action is required unless this Workflow depends upon the dot prefix.'
       ].join(' '));
     }